Door locking chain



FIG. 1 is an isometric view of a door locking chain showing my newdesign.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a left side elevational view thereof.

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a rear elevational view thereof.

The ornamental design for a door locking chain, as shown and described.